<template>
    <div class="list"  ref="wrapper">
      <div class="content">
        <div class="area">
          <div class="title border-topbottom">当前城市</div>
          <div class="button-list clearfix">
            <div class="button-wrapper">
              <div class="button">{{this.city}}</div>
            </div>
          </div>
        </div>
        <div class="area">
          <div class="title border-topbottom">热门城市</div>
          <div class="button-list clearfix">
            <div class="button-wrapper" v-for="item in hotCities" :key="item.id" @click="handleCityClick(item.name)">
              <div class="button">{{item.name}}</div>
            </div>
          </div>
        </div>
        <div>
          <div class="area"  v-for="(item,key) in cities" :key="key" :ref="key">
            <div class="title border-topbottom">{{key}}</div>
            <div class="item-list border-bottom" v-for="cityItem in item" :key="cityItem.id" @click="handleCityClick(cityItem.name)">
              <div class="item">{{cityItem.name}}</div>
            </div>
          </div>
        </div>
      </div>
    </div>
</template>

<script>
// 区域滚动插件
import Bscroll from 'better-scroll'

import { mapState, mapMutations } from 'vuex'

export default {
  name: 'CityList',
  props: {
    cities: Object,
    hotCities: Array,
    letter: String
  },
  data () {
    return {}
  },
  computed: {
    ...mapState(['city'])
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element, 800)
      }
    }
  },
  methods: {
    handleCityClick (city) {
      // this.$store.dispatch('changeCity', city)
      // this.$store.commit('changeCity', city)
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper)
  }
}
</script>

<style lang="stylus" scoped>
  .border-topbottom
    &:before
      border-color:#ccc
    &:after
      border-color:#ccc
  .list
    position :absolute
    top: 1.58rem
    bottom: 0
    left: 0
    right: 0
    overflow :hidden
    .title
      line-height: .54rem
      background :#eee
      padding-left: .2rem
      color:#666
    .button-list
      padding :.1rem .6rem .1rem .1rem
      overflow :hidden
      .button-wrapper
        width :33.33%
        float :left
        .button
          text-align :center
          margin :.1rem
          padding: .1rem 0
          border :.02rem solid #ccc
          border-radius .06rem
    .item-list
      .item
        line-height: .76rem
        color :#666
        padding-left: .2rem
</style>
